Malicious PDF — malware analysis report

Static analysis result for SHA-256 909b49003353d25f…

MALICIOUS

PDF

35.2 KB Created: 2020-09-04 04:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ea84521eaf4685e136ee99f9729ead9 SHA-1: bc5d932902581d109d3dcb08d797c92a5cf94060 SHA-256: 909b49003353d25f7852ebfcc85e48b23651303ab3227daea5a28705d8798ba8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.club'. This URL is presented within the document body, disguised as a link to 'grade 1 math addition word problems pdf'. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to 'static.usrfiles.com'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/wix?keyword=grade+1+math+addition+word+problems+pdf
    • https://static.usrfiles.com/ugd/b8c837_b5ce2959be1140ceb0e46b680de0cc8e.pdf
    • https://static.usrfiles.com/ugd/253000_5d132391eb9c47ee9257826ac7816422.pdf
    • https://static.usrfiles.com/ugd/83e24f_6ba175ec44f147dbaf4e3009986b8d44.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_724de835f3724cac90b6d5c3fa1dd9b8.pdf
    • https://static.usrfiles.com/ugd/ab059d_0a1ddf472f64455eaa5104cc8e496ddc.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2e163d0ad8f4ade89c02e5fa1497de2.pdf
    • https://static.usrfiles.com/ugd/18574e_1476e3d0b7204cfb9244ed34fa33c505.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/fur_elise_easy_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0437/7667/1895/files/mathematics_for_economists_simon.pdf
    • https://cdn.shopify.com/s/files/1/0456/4939/5879/files/kia_rio_sedan_2018_ficha_tecnica.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9874/files/19542031463.pdf
    • https://cdn.shopify.com/s/files/1/0440/7921/8840/files/george_bridgman_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7310/9152/files/arakan_music_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b10.bin
bca79d1be8089dcfee56a0b6a2aae1c2f6e10a5eacd8957f1e6dd46bb54192e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B10 5596 bytes
font_01_sfnt_off00005e00.bin
8cc7aefcfbe4162d46556ba95d2652c4597372c26ba5af16f125482791462e98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E00 9940 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.